feat: 品牌替换 + 启动优化 + AGENTS.md 模板定制

- 品牌替换：OpenCode/opencode → AirCoding/aircoding（16+ 文件）
- Logo ASCII art：修复 left/right 行数不匹配导致的启动崩溃
- 启动诊断：添加 OPENCODE_PRINT_TIMING 计时探针
- dev 模式默认 --pure 跳过外部插件加载
- AGENTS.md 模板：追加 AirCoding 多 Agent 专项段落
- architect prompt + plugin：强化 AGENTS.md 产出验证

packages/storybook/.storybook/mocks/app/context/layout.ts

@@ -0,0 +1,41 @@
+import { createSignal } from "solid-js"
+
+const [all, setAll] = createSignal<string[]>([])
+const [active, setActive] = createSignal<string | undefined>(undefined)
+const [reviewOpen, setReviewOpen] = createSignal(false)
+
+const tabs = {
+  all,
+  active,
+  open(tab: string) {
+    setAll((current) => (current.includes(tab) ? current : [...current, tab]))
+  },
+  setActive(tab: string) {
+    if (!all().includes(tab)) {
+      tabs.open(tab)
+    }
+    setActive(tab)
+  },
+}
+
+const view = {
+  reviewPanel: {
+    opened: reviewOpen,
+    open() {
+      setReviewOpen(true)
+    },
+  },
+}
+
+export function useLayout() {
+  return {
+    tabs: () => tabs,
+    view: () => view,
+    fileTree: {
+      setTab() {},
+    },
+    handoff: {
+      setTabs() {},
+    },
+  }
+}